Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at c:\wamp\www\work\hebbingo\site\test.php:11) in c:\wamp\www\work\hebbingo\site\test.php on line 13

HI ALL
I am beginner in php. I have same problem like Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\wamp\www\php\authentication\register_new.php:1) in C:\wamp\www\php\authentication\register_new.php on line 9. Will you please help me in this stage?

I have a 2d matrix with dimension (3, n) called A, I want to calculate the normalization and cross product of two arrays (b,z) (see the code please) for each column (for the first column, then the second one and so on).
the function that I created to find the ...

I'm working in Excel to extract content of a table from a web page and populate Excel sheet cells with it. I'm trying to extract data from a table that gets loaded to a web page after show results method gets called. I have an error that says "Run-time error ...